Energy, exergy, economic and environmental (4E) analyses of a cleaner fused magnesia system
This study performed a comprehensive energy, exergy, economic, and environmental analysis to evaluate the thermodynamic performance of a cleaner fused magnesia system (CFMS), compare with light burned magnesia process system (LMPS) and fused magnesia process system (FMPS). The analysis considered th...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X23004550 |
| _version_ | 1797729891594010624 |
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| author | tianchi Jiang weijun Zhang |
| author_facet | tianchi Jiang weijun Zhang |
| author_sort | tianchi Jiang |
| collection | DOAJ |
| description | This study performed a comprehensive energy, exergy, economic, and environmental analysis to evaluate the thermodynamic performance of a cleaner fused magnesia system (CFMS), compare with light burned magnesia process system (LMPS) and fused magnesia process system (FMPS). The analysis considered the multi-energy supply and exergy efficiency of the system, and determined its irreversibility under different processes. The yield rate of fused magnesia (34.2%) in CFMS, higher than that of LMPS (12.8%) and FMPS (7.7%). The energy and exergy efficiencies of the CFMS were 35.4 and 26.3%, higher than those of LMPS (29%; 21.2%) and FMPS (22.4%; 16.8%), the energy consumption per unit product were 3410.2 kWh/t, higher than those of LMPS (4800 kWh/t) and FMPS (3640 kWh/t), and the economic benefit of the fused magnesia product was 1476 ￥/t, higher than that of LMPS. The carbon dioxide emission in CFMS was 2.116 kgCO2/kgMgO, which is lower than that of LMPS (4.226 kgCO2/kgMgO), and almost equal to that of FMPS (2.077 kgCO2/kgMgO). The largest exergy loss in CFMS, which was caused by the heat transfer among magnesia products, furnace gas, and air, can be partially recovered using a waste heat recovery system. The improved fused magnesia system was more energy-saving and environmentally friendly. The findings of this study can be used to improve decision making in the smelting system. |
| first_indexed | 2024-03-12T11:37:10Z |
| format | Article |
| id | doaj.art-2396c4a0727342099dbed7d8cd6e4db9 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-03-12T11:37:10Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-2396c4a0727342099dbed7d8cd6e4db92023-09-01T05:01:13ZengElsevierCase Studies in Thermal Engineering2214-157X2023-09-0149103149Energy, exergy, economic and environmental (4E) analyses of a cleaner fused magnesia systemtianchi Jiang0weijun Zhang1State Key Laboratory of Environmental Ecology, Northeastern University, ChinaCorresponding author.; State Key Laboratory of Environmental Ecology, Northeastern University, ChinaThis study performed a comprehensive energy, exergy, economic, and environmental analysis to evaluate the thermodynamic performance of a cleaner fused magnesia system (CFMS), compare with light burned magnesia process system (LMPS) and fused magnesia process system (FMPS). The analysis considered the multi-energy supply and exergy efficiency of the system, and determined its irreversibility under different processes. The yield rate of fused magnesia (34.2%) in CFMS, higher than that of LMPS (12.8%) and FMPS (7.7%). The energy and exergy efficiencies of the CFMS were 35.4 and 26.3%, higher than those of LMPS (29%; 21.2%) and FMPS (22.4%; 16.8%), the energy consumption per unit product were 3410.2 kWh/t, higher than those of LMPS (4800 kWh/t) and FMPS (3640 kWh/t), and the economic benefit of the fused magnesia product was 1476 ￥/t, higher than that of LMPS. The carbon dioxide emission in CFMS was 2.116 kgCO2/kgMgO, which is lower than that of LMPS (4.226 kgCO2/kgMgO), and almost equal to that of FMPS (2.077 kgCO2/kgMgO). The largest exergy loss in CFMS, which was caused by the heat transfer among magnesia products, furnace gas, and air, can be partially recovered using a waste heat recovery system. The improved fused magnesia system was more energy-saving and environmentally friendly. The findings of this study can be used to improve decision making in the smelting system.http://www.sciencedirect.com/science/article/pii/S2214157X23004550Fused magnesia systemExergy destructionEconomic analysisThree phase submerged furnaceWaste heat recoveryEnvironmental analysis |
| spellingShingle | tianchi Jiang weijun Zhang Energy, exergy, economic and environmental (4E) analyses of a cleaner fused magnesia system Case Studies in Thermal Engineering Fused magnesia system Exergy destruction Economic analysis Three phase submerged furnace Waste heat recovery Environmental analysis |
| title | Energy, exergy, economic and environmental (4E) analyses of a cleaner fused magnesia system |
| title_full | Energy, exergy, economic and environmental (4E) analyses of a cleaner fused magnesia system |
| title_fullStr | Energy, exergy, economic and environmental (4E) analyses of a cleaner fused magnesia system |
| title_full_unstemmed | Energy, exergy, economic and environmental (4E) analyses of a cleaner fused magnesia system |
| title_short | Energy, exergy, economic and environmental (4E) analyses of a cleaner fused magnesia system |
| title_sort | energy exergy economic and environmental 4e analyses of a cleaner fused magnesia system |
| topic | Fused magnesia system Exergy destruction Economic analysis Three phase submerged furnace Waste heat recovery Environmental analysis |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X23004550 |
| work_keys_str_mv | AT tianchijiang energyexergyeconomicandenvironmental4eanalysesofacleanerfusedmagnesiasystem AT weijunzhang energyexergyeconomicandenvironmental4eanalysesofacleanerfusedmagnesiasystem |